I bought a Green Fell with sound for Christmas and opened it last week. I couldn’t get it run and KR models sent me a replacement by return. I think their service is exemplary and the replacement works absolutely fine. I recommend the model and can’t imagine a major manufacturer operating like this. I bought a Gt3 with sound last year which works with no issues. I have put the cash down for Big Bertha with sound and smoke for later this year.